1161064647 has 24 divisors (see below), whose sum is σ = 1689921584. Its totient is φ = 768144384.

The previous prime is 1161064603. The next prime is 1161064649. The reversal of 1161064647 is 7464601611.

It is a happy number.

1161064647 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 0 + 6 + 4 + 647 = 666.

It is not a de Polignac number, because 1161064647 - 2¹⁰ = 1161063623 is a prime.

It is a super-2 number, since 2×1161064647² = 2696142229026469218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161064649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1314468 + ... + 1315350.

Almost surely, 2^1161064647 is an apocalyptic number.

1161064647 is a deficient number, since it is larger than the sum of its proper divisors (528856937).

1161064647 is a wasteful number, since it uses less digits than its factorization.

1161064647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1161064647 is about 34074.3987034254. The cubic root of 1161064647 is about 1051.0389254348.

The spelling of 1161064647 in words is "one billion, one hundred sixty-one million, sixty-four thousand, six hundred forty-seven".